Issue 6, 2023

Thermo- and photo-induced electron transfer in a series of [Fe2Co2] capsules

Abstract

Recently, a family of [Fe2Co2] molecular capsules that display tunable electron transfer-coupled spin transition (ETCST) behavior were reported via a smart approach through Schiff-base condensation of aldehyde-functionalized 2,2-bipyridines (bpyCHO) and 1,7-heptanediamine (H2N(CH2)7NH2). Here, three more capsule complexes {[(TpR)Fe(CN)3]2[Co(bpyC[double bond, length as m-dash]N(CH2)nN[double bond, length as m-dash]Cbpy)]2[ClO4]2n(solvent) (1, TpR = Tp*, n = 5, sol = 8DMF; 2, TpR = TpMe, n = 9, sol = 5MeCN; and 3, TpR = Tp*, n = 11, sol = 5MeCN), where Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate and TpMe = hydridotris(3-methylpyrazol-1-yl)borate are reported, demonstrating a successful extension of such an approach with other alkyldiamines of different lengths. Combined X-ray crystallographic, infrared spectroscopic and magnetic studies reveal incomplete electron transfer with either changing temperature or upon light exposure.

Graphical abstract: Thermo- and photo-induced electron transfer in a series of [Fe2Co2] capsules

Supplementary files

Article information

Article type
Paper
Submitted
14 Oct 2022
Accepted
23 Dec 2022
First published
26 Dec 2022

Dalton Trans., 2023,52, 1616-1622

Author version available

Thermo- and photo-induced electron transfer in a series of [Fe2Co2] capsules

L. Meng, Y. Deng, S. M. Holmes and Y. Zhang, Dalton Trans., 2023, 52, 1616 DOI: 10.1039/D2DT03328C

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